세밀한 도구 스트리밍

curl https://api.anthropic.com/v1/messages \
  -H "content-type: application/json" \
  -H "x-api-key: $ANTHROPIC_API_KEY" \
  -H "anthropic-version: 2023-06-01" \
  -d '{
    "model": "claude-opus-4-6",
    "max_tokens": 65536,
    "tools": [
      {
        "name": "make_file",
        "description": "Write text to a file",
        "eager_input_streaming": true,
        "input_schema": {
          "type": "object",
          "properties": {
            "filename": {
              "type": "string",
              "description": "The filename to write text to"
            },
            "lines_of_text": {
              "type": "array",
              "description": "An array of lines of text to write to the file"
            }
          },
          "required": ["filename", "lines_of_text"]
        }
      }
    ],
    "messages": [
      {
        "role": "user",
        "content": "Can you write a long poem and make a file called poem.txt?"
      }
    ],
    "stream": true
  }'

import json
import anthropic

client = anthropic.Anthropic()

tool_inputs = {}  # index -> accumulated JSON string

with client.messages.stream(
    model="claude-opus-4-6",
    max_tokens=1024,
    tools=[
        {
            "name": "get_weather",
            "description": "Get current weather for a city",
            "eager_input_streaming": True,
            "input_schema": {
                "type": "object",
                "properties": {"city": {"type": "string"}},
                "required": ["city"],
            },
        }
    ],
    messages=[{"role": "user", "content": "Weather in Paris?"}],
) as stream:
    for event in stream:
        if (
            event.type == "content_block_start"
            and event.content_block.type == "tool_use"
        ):
            tool_inputs[event.index] = ""
        elif (
            event.type == "content_block_delta"
            and event.delta.type == "input_json_delta"
        ):
            tool_inputs[event.index] += event.delta.partial_json
        elif event.type == "content_block_stop" and event.index in tool_inputs:
            parsed = json.loads(tool_inputs[event.index])
            print(f"Tool input: {parsed}")